My son is deceased and and just had a baby. He was not aware that he was having this child and they are not married. She just had the baby and the hospital stated the father could not be on the birth Certifacate. I do not want this child having a blank where his father name should be. I am his mother and I want it there as much as the mother of the child. What can I do? What steps do we need to take to get this done? We live in California.